Sandra D Downey

US Patent:

63251388, Dec 4, 2001

Filed:

Feb 26, 1999

Appl. No.:

9/258668

Inventors:

Thomas J. Garosshen - Glastonbury CT
Sandra J. Downey - Cazenovia NY
Daniel P. Gaffaney - Chittenango NY

Assignee:

Carrier Corporation - Syracuse NY

International Classification:

F28F 1902

US Classification:

165133

Abstract:

An article having a first member formed from a first metal and a second member connected with the first member at a contact area. The second member is formed from a second metal having high reduction reaction kinetics and galvanic corrosion driving force relative the first member, wherein the second metal is more noble than the first metal. A material for substantially eliminating the galvanic corrosion problem by reducing the reduction reaction kinetics of the second metal in the presence of an electrolyte is provided between the first and second metals. In a preferred embodiment, the article is a heat exchanger wherein the first member is a fin collar and the second member a tube and the material for reducing is a coating on the tube has low reduction reaction kinetics relative to copper for reducing corrosion activities between the tube and fin collar.